[3] Create a direcory to share with client

[4] Edit exports file

[root@server ~]# vim /etc/exports
and insert following line

/svrfile 192.168.5.3(rw,sync,no_root_squash)

192.168.5.3 is nfs client where i'm going share /svrfile . you can specify client host as 192.168.5.3/24
however /24 is default for class C network. If you wish to share with any host you can use '*' (without qutoes) instead of ipaddress.
Several parameters are available.I used rw,sync and no_root_squash . here is brief explanation.